LB11872V Просмотр технического описания (PDF) - SANYO -> Panasonic

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LB11872V

For Polygonal Mirror Motors Scanner Driver IC

SANYO -> Panasonic 

LB11872V

Pin Functions

Pin No.

1

Symbol

VREG

Pin Description

Stabilized power supply (6.3 V).

Insert a capacitor (about 0.1µF) between this pin and

ground for stabilization.

VCC

Equivalent Circuit

22

2

VCC

Power supply

8

SUB

SUB pin.

Connect this pin to ground.

9

RF

Motor drive outputs.

If the output oscillates, insert a capacitor (about 0.1µF)

between this pin and ground.

VCC

VREG

10

OUT1 Output current detection.

11

OUT2 Insert low-valued resistors (Rf) between these pins

12

OUT3 and ground.

The output current will be limited to the value set by

the equation IOUT = VL/RF.

300Ω

13

IN2+

Hall effect sensor signal inputs.

14

IN2-

These inputs are high when IN+ is greater than IN-

VCC

15

IN1+

and low when IN- is greater than IN+.

16

IN1-

The logic high state indicates that VIN+ has a lever

17

IN3+

higher than VIN-.

18

IN3-

Insert capacitors between the IN+ and IN- pins to

reduce noise.

An amplitude of over 50mA p-p and under 350mVp-p

35 7

300Ω

is desirable for the Hall input signals.

Kickback can occur in the output waveform if the Hall

input amplitude is over 350mVp-p.

26 27 28

25

300Ω

24 6

23

GND

Ground

28

AGC

AGC amplifier frequency characteristics correction.

Insert a capacitor (about 0.022µF) between this pin

and ground.

VREG

300Ω

8

Continued on next page.

No.A0367-7/12

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